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(No Model.)

G. R. DAVIS;

HARROW ATTACHMENT F03 GULTIVATORS. No. 352,740. Patented Nov. 16, 1-886 fittest I ipT/rzto r I WMM KQM N. PFYERS. PMQo-Ulhcgnpller. Wuhi nnnnnnn C.

} {UNITED STATES PATENT OFFICE.

CALVIN-R. DAVIS, OF INDIANAPOLIS, INDIANA.

HARR OW ATTACHMENT FOR CULTIVATORS.

SPECIFICATION forming part of Letters Patent No. 352,740, dated November 16, I886.

I Application filed July 12, 1836. Serial No. 207,829. (No nodeL) To all whom it may concern:

Be it known that I, CALVIN R. DAVIS, a citizen of the United States, residing at Indianapolis, in the county Marion and State of Indiana,have invented a certain new and useful Improvement in Harrow Attachments for Onltivators, of which the following is a specification.

The object of my improvement is to so construct a barrow attachment that each harrowtooth may have a break-pin independent of the other, and thus obviate the straining of the frame of the attachment or the cultivatorshank by coming in sudden contact with stationary obstacles in the ground.

My said improvement consists in the combination and arrangement of parts, which will hereinafter be more fully described and claimed.

Referring to the accompanying drawings, which are made a part hereof, Figure 1 is a perspectiveview of my invention, and Fig. 2 is a detached View showing the manner of securing the attachment to a cultivatorshank.

a is a central frame, adapted to being secured to the shank b of any ordinary cultivator.

0 0c are arms radiating from frame a, one forward and two laterally, upon the extremities of which are formed heads at d d. Said heads are adapted to embrace the upper ends of the barrow-teeth c e e. Said teeth are piv oted at their upper ends in said heads by bolts f f f, passed through the head and .through the tooth. A hole, 9 g g, is also made through the The lateral teeth are pivoted" move backward out of the head under the same circumstances as affect the forward tooth.

In Fig. 2, a is the frame, I) the cultivatorshank, and h a cap holdingsaid frame to said shank by means of bolts 1' i. been found insuflicient to prevent the attachment from turning upon the shank. I therefore raisea boss upon cap h, through which I thread a set screw, j, turning it hard against the shank b, holding the attachment securely in position. I

I must be understood as not limiting myself to any particular form or shape of arms, heads, and teeth, as those may be varied without departing from the spirit of my invention.

What I do claim as my invention, and desire.

' to protect by Letters Patent, is-

The combination,with frame a and shank b, of arms 0 c 0, having harrow teeth e e e, pivotally secured thereon, substantially as shown and described. I o

' CALVIN R. DAVIS. Witnesses:

JAMES S. SOHOONOVER, E. E. SIcKLER.

This device has V 

